<form id="frmLogar" name="frmLogar" action="<?php echo base_url()."principal/logar";?>" method="post" >

	<label>Login:</label>
	<input type="text" id="strLogin" name="strLogin" />
	<label>Senha:</label>
	<input type="password" id="strSenha" name="strSenha" />
	<input type="submit" id="bt_logar" name="bt_logar" value="Entrar" />

</form>